I find it funny you’re calling him intentionally obtuse right after you seem to just simplify theivery at whether something physical is stolen. If you’re basing it off of something being stolen or not, IP is used to protect the realized gains off of an idea. Yeah you aren’t stealing a physical something, but you are robbing the creator of what the item is valued at. It is exactly the issue that you can’t own an idea that IP is usually heavily protected. Ironically, the intention is to help new ideas(and their profiting worth) from being stolen by someone (or something ie Coporations) with better means to distribute and profit off of the idea. Otherwise, why wouldn’t I just get a copy of a game, underpriced it, and sell it as cheap as I wanted? I’ve put no thought or labor into actualized the idea, so I have no reason to price it beyond my initial investment. It why when someone (or something) sells full rights to their IP, it can be worth millions. They don’t care about the idea. They care about what the idea can provide in the future.
To draw a parallel, saying IP isn’t real is like saying currency has no worth. On the surface, duh of course currency isn’t actually worth anything. It’s not like people can (practically) eat a dollar or make shoes out of a dollar, but we’ve (generally) collectively decided it’s worth something. It instils confidence that when I walk into a store, my currency has a conversion rate of so many dollars per good. If thousands of people added millions of dollars into their bank accounts by just “copying” the electronic money, no one has lost money, but the value of the currency is deflated by those actions because there’s nothing stopping everyone from from just adding millions to their accounts. The confidence that people will be harshly dealt with for deflating the currency like that is one of the innate things that gives currencies (and IP’s) their value. Handwaving it away by saying it isn’t actually real is also just being obtuse.